Here is what I remember about this film. A guy is being held by two different people pleading to a guy in front of him holding a knife. The guy with the knife waves it in front of the restrained guys face for a bit talking. He then proceeds to slice the restrained guy's nostrils.
Chinatown with Jack Nicholson has such a scene.
I agree with akiratubo, that's a pretty central scene to Roman Polanski's Chinatown.
Awesome call guys thanks! I knew the guy getting his nose sliced was a well known actor but I couldn't place it.